Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc minh
hanh vai » hanh vi, hanh tai, hanh van
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu ve cam ((xuc van) or (duc manh)) ((hanh vai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve cam ((xuc van) OR (duc manh)) ((hanh vai) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve cam ((xuc van) or (duc manh)) ((hanh vai) or (hanh va)) cua tre*.